Yeah the "reverse warning system" I guess that makes more sense....it's the sensors in the rear bumper that warns you when you are to close to something...mine are no longer working along with my horn...but my horn works when I activate the alarm.

Yeah the "reverse warning system" I guess that makes more sense....it's the sensors in the rear bumper that warns you when you are to close to something...mine are no longer working along with my horn...but my horn works when I activate the alarm.

No idea. That's an aftermarket addition I guess. Like anything else, I would re-check the connections.